Implementation of Wireless Power Transfer Circuit by Using Magnetic Resonant Coupling Method
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Wireless charging is a technology of transmitting power through an air gap to an electrical load for the purposeof energy dissemination. Compared to traditional charging with code, wireless power charging has many benefitsof avoiding the hassle from connecting cables, rendering the design and fabrication of much smaller deviceswithout the attachment of batteries, providing flexibility for devices, and enhancing energy efficiency, etc. Atransmitting coil and a receiving coil for inductive coupling or magnetic resonant coupling methods are availablefor the near field techniques, but are not for the far field one. In this paper, the wireless power transfer (WPT)circuit by using magnetic resonant coupling method with a resonant frequency of 13.45 Mhz for the low powersystem is implemented to measure the power transmission efficiency in terms of mutual distance andomnidirectional angles of receiver.
Abstract
Wireless charging is a technology of transmitting power through an air gap to an electrical load for the purposeof energy dissemination. Compared to traditional charging with code, wireless power charging has many benefitsof avoiding the hassle from connecting cables, rendering the design and fabrication of much smaller deviceswithout the attachment of batteries, providing flexibility for devices, and enhancing energy efficiency, etc. Atransmitting coil and a receiving coil for inductive coupling or magnetic resonant coupling methods are availablefor the near field techniques, but are not for the far field one. In this paper, the wireless power transfer (WPT)circuit by using magnetic resonant coupling method with a resonant frequency of 13.45 Mhz for the low powersystem is implemented to measure the power transmission efficiency in terms of mutual distance andomnidirectional angles of receiver.
참고문헌 (6)
- "Homepage of Wireless Power Consortium"[URL]
- W.C. Brown, "The History of Power Transmission by Radio Waves", IEEE Transactions on Microwave Theory and Techniques, 32(9), pp.1230~1242 (1984), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
- N. Tesla, "Apparatus for transmitting electrical energy", U.S. patent, ~ (1914)
- A. Kurs, "Wireless Power Transfer via Strongly Coupled Magnetic Resonances", Science, 317(5834), pp.83~86 (2007), American Association for the Advancement of Science (AAAS)[DOI]
- Jun-Feng Chen, "METAMATERIAL-BASED HIGH-EFFICIENCY WIRELESS POWER TRANSFER SYSTEM AT 13.56 MHZ FOR LOW POWER APPLICATIONS", Progress In Electromagnetics Research B, 72, pp.17~30 (2017), EMW Publishing[DOI]
- 김동건, "Omnidirectional Resonator in X-Y Plane Using a Crisscross Structure for Wireless Power Transfer", Journal of Electromagnetic Engineering and Science, 15(3), pp.194~198 (2015), 한국전자파학회